<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		body{background-image:url(img/bj.jpg);
			 background-repeat:no-repeat;
			 background-position:30px 90px;
			 background-attachment:fixed;}
		#box{width:300px;height:2000px;}
	</style>
</head>
<body>
	<div id="box"></div>
</body>
</html>
